Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents, including restricted cash of $152 for both periods presented	$ 44,660	$ 27,325
Inventories	9,192	14,525
Prepaid expenses and other assets	2,482	2,450
Total current assets	64,102	49,534
Leasehold improvements and equipment, net	1,719	2,137
Intangible assets, net	359	510
Right-of-use assets	1,730	2,400
Other long-term assets	368	383
Total assets	68,278	54,964
Current liabilities
Accounts payable	8,526	10,232
Accrued expenses	7,817	9,493
Current maturities of operating lease obligations	982	691
Current maturities of finance lease obligations	12	11
Customer deposits	611	195
Total current liabilities	17,948	20,622
Deferred revenue	2,579	3,311
Operating lease obligations, less current maturities	1,657	2,563
Finance lease obligations, less current maturities	0	12
Total liabilities	22,184	26,508
Commitments and Contingencies (Notes 10 and 16)
Stockholders' Equity
Common stock, $0.001 par value; authorized 150,000 shares; 77,330 shares and 74,981 shares issued and outstanding at December 31, 2024 and December 31, 2023, respectively.	77	75
Additional paid-in capital	227,931	218,845
Accumulated deficit	(181,910)	(190,460)
Cumulative translation adjustments	(4)	(4)
Total stockholders' equity	46,094	28,456
Total liabilities and stockholders' equity	68,278	54,964
Nonrelated Party
Current assets
Trade receivables, net of allowances of $95 and $68, respectively; including receivables from Related Party of zero and $2.8 million, respectively.	$ 7,768	$ 5,234